<https://www.qualityprecisiontools.com/product/m5-o10-mm-silicon-nitride-ball-tungsten-carbide-stem-l-65-5-mm-ml-52-5-mm-for-zeiss-applications/#product>
<http://schema.org/description>
"M5 Ø10 mm silicon nitride ball, tungsten carbide stem, L 65.5 mm, ML 52.5 mm, for Zeiss applications\r\n\r\nM5 straight stylus, for Zeiss applications.\r\n\r\nNote: measurement length is to end of ball.\r\n\r\n\r\n\r\nDK\r\n10.0 mm\r\n\r\n\r\nML1/ML\r\n52.50 mm\r\n\r\n\r\nDG/D\r\n11.00 mm\r\n\r\n\r\nL\r\n65.50 mm\r\n\r\n\r\nDS1/DS\r\n6.0 mm\r\n\r\n\r\nWeight\r\n25.8 g"
<https://www.qualityprecisiontools.com/product/m5-o10-mm-silicon-nitride-ball-tungsten-carbide-stem-l-65-5-mm-ml-52-5-mm-for-zeiss-applications/>